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My fork of git://git.ipxe.org/ipxe.git, it is used for my netboot environment at home.
This repository has been archived on 2020-12-06. You can view files and clone it, but cannot push or open issues or pull requests.
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Michael Brown 747e9eb6f3 [lkrnprefix] Allow relocation when no initrd is present 
Commit 2629b7e ("[pcbios] Inhibit all calls to INT 15,e820 and INT
15,e801 during POST") introduced a regression into .lkrn images when
used with no corresponding initrd.

Specifically, the semantics of the "maximum address for relocation"
value passed to install_prealloc() in %ebp changed so that zero became
a special value meaning "inhibit use of INT 15,e820 and INT 15,e801".
The %ebp value meaing "no upper limit on relocation" was changed from
zero to 0xffffffff, and all prefixes providing fixed values for %ebp
were updated to match the new semantics.

The .lkrn prefix provides the initrd base address as the maximum
address for relocation.  When no initrd is present, this address will
be zero, and so will unintentionally trigger the "inhibit INT 15,e820
and INT 15,e801" behaviour.

Fix by explicitly setting %ebp to 0xffffffff if no initrd is present
before calling install_prealloc().

Reported-by: Ján ONDREJ (SAL) <ondrejj@salstar.sk>
Tested-by: Ján ONDREJ (SAL) <ondrejj@salstar.sk>
Signed-off-by: Michael Brown <mcb30@ipxe.org>
 		2013-03-15 15:34:50 +00:00
contrib [contrib] Enable bochs debug port by default 2012-10-05 13:24:07 +01:00
src [lkrnprefix] Allow relocation when no initrd is present 2013-03-15 15:34:50 +00:00
COPYING Initial revision 2005-05-17 16:44:57 +00:00
COPYRIGHTS [build] Rename gPXE to iPXE 2010-04-19 23:43:39 +01:00
README [doc] Re-add README file 2010-05-28 00:03:47 +01:00

README 

iPXE README File

Quick start guide:

   cd src
   make

For any more detailed instructions, see http://ipxe.org